CN110794711A - Train energy-saving operation control method based on energy-saving slope, electronic device and medium - Google Patents
Train energy-saving operation control method based on energy-saving slope, electronic device and medium Download PDFInfo
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Abstract
The embodiment of the invention discloses a train energy-saving operation control method based on an energy-saving slope, electronic equipment and a medium, wherein the method comprises the following steps: dividing the train operating stations into a plurality of sections by taking speed-variable limit points and gradient-variable points between the train operating stations as dividing points, and establishing a train energy-saving operation control model according to line data of each section; when the train runs on an energy-saving slope, inputting the line data of the current interval into a train energy-saving running control model to obtain a current traction threshold and a current coasting threshold; and controlling the running of the train in real time according to the current traction threshold and the current coasting threshold. The train operation station is divided into a plurality of areas, the traction threshold and the coasting threshold of the current area are obtained in real time, the train operation is controlled in real time, the train operation is optimized only through a software method, the cost is low, the applicability is strong, the train is prevented from being braked excessively while the train traction energy consumption is reduced, and the service life of a motor is prolonged.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a train energy-saving operation control method based on an energy-saving slope, electronic equipment and a medium.
Background
At present, when an urban rail transit line is designed, in order to fully utilize potential energy of a train and reduce traction energy consumption of the train, a line at a distance from a train leaving direction is generally set to be a downhill, and a line at a distance from the train entering direction is set to be an uphill, namely an energy-saving slope.
Most rail transit lines have an Automatic Train Operation (ATO) function, but the ATO control strategy does not fully utilize the advantages of an energy-saving slope, namely braking output occurs when a slope descends and traction output occurs when the slope ascends.
In the prior art, braking output occurs when an energy-saving slope goes downhill, and traction output occurs when the energy-saving slope goes uphill, so that the energy consumption of a train is greatly improved.
Disclosure of Invention
Because the existing method has the problems, the embodiment of the invention provides an energy-saving slope-based train energy-saving operation control method, electronic equipment and medium.
In a first aspect, an embodiment of the present invention provides an energy-saving operation control method for a train based on an energy-saving slope, including:
dividing the train operating stations into a plurality of sections by taking speed-variable limit points and gradient-variable points between the train operating stations as dividing points, and establishing a train energy-saving operation control model according to line data of each section;
when a train runs on an energy-saving slope, inputting line data of a current interval into the train energy-saving running control model to obtain a current traction threshold and a coasting threshold output by the train energy-saving running control model;
and controlling the running of the train in real time according to the current traction threshold and the current coasting threshold.
Optionally, the establishing a train energy-saving operation control model according to the line data of each section specifically includes:
determining target stations, and corresponding line data among the target stations to different intervals;
initializing a traction threshold and a coasting threshold of each interval, wherein the initialized traction threshold and the initialized coasting threshold are smaller than the speed limit of the current interval;
simulating the train operation according to the initialized traction threshold and the coasting threshold to obtain simulation data;
and if the simulation data meet the preset conditions, ending the simulation, and taking all the obtained traction thresholds and the obtained coasting thresholds as the train energy-saving operation control model.
Optionally, if it is determined that the simulation data meets the preset condition, ending the simulation, specifically including:
and if the running energy consumption of the train is judged to be the lowest value, or the increase of the running time of the train does not exceed the preset range, ending the simulation.
Optionally, the train energy-saving operation control method based on the energy-saving slope further includes:
if the lowest value still exists, adjusting the current traction threshold and the current coasting threshold by adopting an ant colony or particle swarm random optimization algorithm, and simulating the train operation again according to the adjusted traction threshold and the adjusted coasting threshold.
Optionally, after the dividing the train operating stations into a plurality of sections by using the variable speed limit points and the variable gradient points between the train operating stations as dividing points and establishing the train energy-saving operation control model according to the line data of each section, the method further includes:
and configuring the traction threshold and the coasting threshold obtained by the train energy-saving operation control model in a solving stage into an electronic map file according to preset configuration conditions.
Optionally, the preset configuration condition includes:
adding a sheet page in the electronic map file or modifying the sheet page based on the original data format;
and configuring the number of intervals between different stations under different operation levels, and the traction threshold, the coasting threshold and the target speed of different intervals.
Each interval comprises a starting point, an end point, a running direction, a traction threshold, an idle threshold and a target speed; the tow threshold, the coast threshold, and the target speed may be configured to be invalid.
Optionally, the controlling the operation of the train in real time according to the current traction threshold and the coasting threshold specifically includes:
when the train speed exceeds the current traction threshold, the train enters an inert running stage and is controlled to run inert;
and when the speed of the train is less than the current coasting threshold, the train enters a traction stage and is controlled to perform traction operation.
Optionally, the controlling the operation of the train in real time according to the current traction threshold and the coasting threshold specifically includes:
and if the current traction threshold and/or the coasting threshold are/is found to be invalid, controlling the train to run according to preset parameters.
In a second aspect, an embodiment of the present invention further provides an electronic device, including:
at least one processor; and
at least one memory communicatively coupled to the processor, wherein:
the memory stores program instructions executable by the processor, which when called by the processor are capable of performing the above-described methods.
In a third aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium storing a computer program, which causes the computer to execute the above method.
According to the technical scheme, the train operation station is divided into the plurality of areas, the traction threshold and the coasting threshold of the current area are obtained in real time, the operation of the train is controlled in real time, the train operation is optimized only through a software method, the cost is low, the applicability is strong, the train traction energy consumption is reduced, the train is prevented from being braked excessively, and the service life of a motor is prolonged.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a train energy-saving operation control method based on an energy-saving slope according to an embodiment of the present invention;
fig. 2 is a schematic diagram of interval division between train stations according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a train energy-saving operation control method based on an energy-saving slope according to another embodiment of the present invention;
fig. 4 is a logic block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Fig. 1 shows a flow chart of a train energy-saving operation control method based on an energy-saving slope according to this embodiment, which includes:
s101, dividing the train operating stations into a plurality of sections by taking speed-changing limit points and gradient-changing points between the train operating stations as dividing points, and establishing a train energy-saving operation control model according to line data of each section.
The train operation stations are tracks among the operation stations of the train.
The speed-limiting changing point is a point for changing the speed limit in the running process of the train.
The gradient changing point is a point for changing the gradient in the running process of the train.
The interval is a plurality of sections obtained by dividing the track between the running stations.
The line data is data related to an operating line.
The train energy-saving operation control model is used for storing data such as a traction threshold, an idle running threshold and the like of a train in each interval.
S102, when the train runs on the energy-saving slope, inputting the line data of the current interval into the train energy-saving running control model to obtain the current traction threshold and the coasting threshold output by the train energy-saving running control model.
And the current traction threshold is a threshold which is stored in the train energy-saving operation control model and used for judging whether the current interval is in a traction stage.
And the current coasting threshold is a threshold stored in the train energy-saving operation control model and used for judging whether the current interval is in the coasting stage.
And S103, controlling the running of the train in real time according to the current traction threshold and the current coasting threshold.
Specifically, the train energy-saving operation control method based on the energy-saving slope provided by the embodiment is composed of three stages, namely a data preparation stage, an optimization model establishment stage and a model solving stage.
The main function of the data preparation stage is to convert the line electronic map data and provide a corresponding data source for subsequent calculation. The ATO energy-saving operation control optimization is related to the gradient and the speed limit of a train, in the stage, a speed limit changing point and a gradient changing point are used as dividing points between train operating stations, the operating stations are divided into a plurality of sections, and an interval Section is formed between any two dividing points, as shown in figure 2.
And in the optimization model establishing stage, a train energy-saving operation control optimization model is established by using the line data obtained in the data preparation stage. In the existing control strategy, an ATO is provided with a traction threshold and an idle threshold in a cruise control stage, and when the speed of a train exceeds the traction threshold, the train enters the idle stage (the train does not traction); and when the speed of the train is less than the coasting threshold, the train enters a traction stage. Due to the effect of the grade, the train may accelerate even during the coasting phase, resulting in the train speed exceeding the target speed value and thus in the train braking. In order to better utilize the gravity acceleration provided by the gradient, the traction threshold and the coasting in each Section need to be set independently so as to better control the switching time of the train traction coasting.
In the model solving stage, a simulation program is used for solving the traction threshold and the coasting threshold in each Section.
In the embodiment, the train operation station is divided into a plurality of areas, the traction threshold and the coasting threshold of the current area are obtained in real time, the train operation is controlled in real time, the train operation is optimized only by a software method, the cost is low, the applicability is strong, the train is prevented from being braked excessively while the train traction energy consumption is reduced, and the service life of a motor is prolonged.
Further, on the basis of the above method embodiment, S101 specifically includes:
determining target stations, and corresponding line data among the target stations to different intervals;
initializing a traction threshold and a coasting threshold of each interval, wherein the initialized traction threshold and the initialized coasting threshold are smaller than the speed limit of the current interval;
simulating the train operation according to the initialized traction threshold and the coasting threshold to obtain simulation data;
and if the simulation data meet the preset conditions, ending the simulation, and taking all the obtained traction thresholds and the obtained coasting thresholds as the train energy-saving operation control model.
Specifically, in the model solving stage of the train energy-saving operation control model, a simulation program is used for solving the traction threshold and the coasting threshold in each Section.
The solving process is shown in fig. 3. Firstly, selecting optimized target stations, reading in line data between the corresponding stations, obtaining different Section intervals according to a Section dividing method, randomly initializing traction and coasting threshold values (less than the speed limit of the current Section) in different sections, and performing train operation simulation by taking the current traction and coasting threshold values as simulation parameters. And then based on the data obtained by simulation, the two indexes of train operation energy consumption and punctuality are mainly evaluated, whether the train energy consumption is the lowest value or not is judged when the train operation time is increased by no more than a certain range compared with the planned operation time, and the lowest value of the train energy consumption is not changed any more after multiple cycles, so that the optimization can be considered to be finished. If the lowest value still appears, the traction and coasting threshold values can be adjusted by adopting random optimization algorithms such as ant colony and particle swarm, and the train operation simulation is carried out again.
Further, on the basis of the above method embodiment, if it is determined that the simulation data satisfies the preset condition, ending the simulation specifically includes:
and if the running energy consumption of the train is judged to be the lowest value, or the increase of the running time of the train does not exceed the preset range, ending the simulation.
Further, the train energy-saving operation control method based on the energy-saving slope further comprises the following steps:
if the lowest value still exists, adjusting the current traction threshold and the current coasting threshold by adopting an ant colony or particle swarm random optimization algorithm, and simulating the train operation again according to the adjusted traction threshold and the adjusted coasting threshold.
Specifically, based on data obtained by simulation, two indexes of train operation energy consumption and punctuality are evaluated, whether the train energy consumption is the lowest value or not is judged when the train operation time is increased by no more than a certain range compared with the planned operation time, and the lowest value of the train energy consumption is not changed any more after multiple cycles, so that the optimization can be considered to be finished. If the lowest value still appears, the traction and coasting threshold values can be adjusted by adopting random optimization algorithms such as ant colony and particle swarm, and the train operation simulation is carried out again.
Further, on the basis of the above method embodiment, after S101, the method further includes:
and configuring the traction threshold and the coasting threshold obtained by the train energy-saving operation control model in a solving stage into an electronic map file according to preset configuration conditions.
Wherein the preset configuration condition comprises:
adding a sheet page in the electronic map file or modifying the sheet page based on the original data format;
and configuring the number of intervals between different stations under different operation levels, and the traction threshold, the coasting threshold and the target speed of different intervals.
Each interval comprises a starting point, an end point, a running direction, a traction threshold, an idle threshold and a target speed; the tow threshold, the coast threshold, and the target speed may be configured to be invalid.
In the train energy-saving operation control method based on the energy-saving slope provided by the embodiment, the traction threshold and the coasting threshold of train operation are no longer fixed values, and real-time query is needed. Therefore, in practical application, data obtained in the model solving stage is required to be configured into an electronic map file according to the preset configuration conditions.
Further, on the basis of the above method embodiment, S103 specifically includes:
when the train speed exceeds the current traction threshold, the train enters an inert running stage and is controlled to run inert;
and when the speed of the train is less than the current coasting threshold, the train enters a traction stage and is controlled to perform traction operation.
Wherein, the inert running stage is a stage of the train running in an inert mode.
And the traction stage is a stage of traction operation of the train.
The train is controlled to run in corresponding stages by judging that the train speed exceeds the current traction threshold or is smaller than the current coasting threshold, so that the train is prevented from being braked excessively while the train traction energy consumption is reduced, and the service life of a motor is prolonged.
Or, S103 specifically includes:
and if the current traction threshold and/or the coasting threshold are/is found to be invalid, controlling the train to run according to preset parameters.
Specifically, the train continuously queries a traction threshold and an idle threshold corresponding to the current train position in the running process, and adjusts parameters in the ATO control algorithm in real time. And if the inquired traction and coasting threshold values are invalid, controlling the train to run by using default parameters.
The embodiment optimizes the train operation only by a software method, so the cost is low; only certain requirements are required on line conditions, and the applicability is strong; the traction energy consumption of the train is reduced, excessive braking of the train is avoided, and the service life of the motor is prolonged.
Referring to fig. 4, the electronic device includes: a processor (processor)401, a memory (memory)402, and a bus 403;
wherein the content of the first and second substances,
the processor 401 and the memory 402 complete communication with each other through the bus 403;
the processor 401 is configured to call program instructions in the memory 402 to perform the methods provided by the above-described method embodiments.
The present embodiments disclose a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, the computer is capable of performing the method of:
dividing the train operating stations into a plurality of sections by taking speed-variable limit points and gradient-variable points between the train operating stations as dividing points, and establishing a train energy-saving operation control model according to line data of each section;
when a train runs on an energy-saving slope, inputting line data of a current interval into the train energy-saving running control model to obtain a current traction threshold and a coasting threshold output by the train energy-saving running control model;
and controlling the running of the train in real time according to the current traction threshold and the current coasting threshold.
The present embodiments provide a non-transitory computer-readable storage medium storing computer instructions that cause the computer to perform the following method
Dividing the train operating stations into a plurality of sections by taking speed-variable limit points and gradient-variable points between the train operating stations as dividing points, and establishing a train energy-saving operation control model according to line data of each section;
when a train runs on an energy-saving slope, inputting line data of a current interval into the train energy-saving running control model to obtain a current traction threshold and a coasting threshold output by the train energy-saving running control model;
and controlling the running of the train in real time according to the current traction threshold and the current coasting threshold.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
It should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An energy-saving operation control method for a train based on an energy-saving slope is characterized by comprising the following steps:
dividing the train operating stations into a plurality of sections by taking speed-variable limit points and gradient-variable points between the train operating stations as dividing points, and establishing a train energy-saving operation control model according to line data of each section;
when a train runs on an energy-saving slope, inputting line data of a current interval into the train energy-saving running control model to obtain a current traction threshold and a coasting threshold output by the train energy-saving running control model;
and controlling the running of the train in real time according to the current traction threshold and the current coasting threshold.
2. The train energy-saving operation control method based on the energy-saving slope as claimed in claim 1, wherein the establishing of the train energy-saving operation control model according to the line data of each section specifically comprises:
determining target stations, and corresponding line data among the target stations to different intervals;
initializing a traction threshold and a coasting threshold of each interval, wherein the initialized traction threshold and the initialized coasting threshold are smaller than the speed limit of the current interval;
simulating the train operation according to the initialized traction threshold and the coasting threshold to obtain simulation data;
and if the simulation data meet the preset conditions, ending the simulation, and taking all the obtained traction thresholds and the obtained coasting thresholds as the train energy-saving operation control model.
3. The energy-saving slope-based train energy-saving operation control method according to claim 2, wherein if the simulation data is judged to meet the preset condition, ending the simulation specifically comprises:
and if the running energy consumption of the train is judged to be the lowest value, or the increase of the running time of the train does not exceed the preset range, ending the simulation.
4. The energy-saving slope-based train energy-saving operation control method according to claim 3, wherein the energy-saving slope-based train energy-saving operation control method further comprises:
if the lowest value still exists, adjusting the current traction threshold and the current coasting threshold by adopting an ant colony or particle swarm random optimization algorithm, and simulating the train operation again according to the adjusted traction threshold and the adjusted coasting threshold.
5. The energy-saving slope-based train energy-saving operation control method according to claim 1, wherein after dividing the train operating stations into a plurality of sections by taking the variable speed point and the variable gradient point between the train operating stations as dividing points and establishing a train energy-saving operation control model according to line data of each section, the method further comprises:
and configuring the traction threshold and the coasting threshold obtained by the train energy-saving operation control model in a solving stage into an electronic map file according to preset configuration conditions.
6. The energy-saving slope-based train energy-saving operation control method according to claim 5, wherein the preset configuration conditions include:
adding a sheet page in the electronic map file or modifying the sheet page based on the original data format;
and configuring the number of intervals between different stations under different operation levels, and the traction threshold, the coasting threshold and the target speed of different intervals.
Each interval comprises a starting point, an end point, a running direction, a traction threshold, an idle threshold and a target speed; the tow threshold, the coast threshold, and the target speed may be configured to be invalid.
7. The energy-saving slope-based train energy-saving operation control method according to claim 1, wherein the real-time control of the train operation according to the current traction threshold and the coasting threshold specifically comprises:
when the train speed exceeds the current traction threshold, the train enters an inert running stage and is controlled to run inert;
and when the speed of the train is less than the current coasting threshold, the train enters a traction stage and is controlled to perform traction operation.
8. The energy-saving slope-based train energy-saving operation control method according to claim 1, wherein the real-time control of the train operation according to the current traction threshold and the coasting threshold specifically comprises:
and if the current traction threshold and/or the coasting threshold are/is found to be invalid, controlling the train to run according to preset parameters.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and operable on the processor, wherein the processor implements the energy-saving slope-based train energy-saving operation control method according to any one of claims 1 to 8 when executing the program.
10. A non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the energy-saving hill based train energy saving operation control method according to any one of claims 1 to 8.
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